358 HIDEAWAY™ BACKPACK Expandable Prefer Pets Hideaway™ Expandable Backpack is the (NEW!) thoughtfully-designed, safe and secure carrier for life on the go with small pets. This convertible carrier is an upgrade of the Hideaway Pet Backpack, adding a new expandable bay window with 65% additional space for pets to lounge! A zippered side panel allows for your pet’s easy entry and exit. Mesh windows on three sides provide ample ventilation making this carrier the ideal choice for your pet's health and comfort. Each panel features a roll-up-n-down privacy cover to shut out distractions for discreet travel. This carrier features a large, deep pocket to hold treats and waste bags. A faux-fur, machine-washable floor mat keeps the carrier upright from the base. This carrier features water-resistant canvas fabric and complies with major airlines’ in-cabin carry-on regulations. Luggage tag and Pet ID card included.